bought this one Fall in Jackson WY...
Nice - did you get the tail?
3/8 Way Too Cool 50k WNS
4/19 Tehama Wildflowers 50k
Real suggestions may be superfluous given where we are headed; however:
Layer 1: Merino boxers -- if you are finicky get the Rapha ones -- yes, Rapha are a very British cycling company, but their merino accessories (and rain jacket, among other things) rule. You can get a wind resistant compression brief from North Face (others?), but I prefer the merino boxers.
Layer 2: Normal shorts
Layer 3: Patagonia Houdini pants (if not too cold, or cold and rainy) or North Face wind stopper pants